Dr. Darrin Patrick Fleming , OD
Optometrist • Eugene, OR
1550 Oak St Ste 4
Eugene, OR 974017701
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on January 5, 2006; this date does not establish years in practice.
-
Published CMS data list 245 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 77 service units.
- 99214 — Established patient outpatient office visit: 68 service units.
- 92134 — Imaging of retina: 57 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 239 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Latanoprost — 128 prescription fills, including refills.
- Timolol Maleate — 46 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) — 24 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table · Guide: How to read Medicare Part D prescriber data
-
Close to the middle for Medicare Part B services among clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: 208. Middle half: 112 to 463.
More Medicare Part B services than 60% of clinicians listed under Optometrist in Oregon (2024, 406 clinicians with data). Median for this group: 177. Middle half: 81 to 438.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 153 in 2020 to 245 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1550 Oak St Ste 4
Eugene, OR 974017701
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Optometrist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
125 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $21,494 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $14,230 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
384 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$3,000 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2024
All general payments: $33.74 across 2 records.
By nature of payment
- Food and Beverage: $33.74 across 2 records.
Reporting-company totals
- RxSight Inc: $19.40 across 1 record.
- Novo Nordisk Inc: $14.34 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Fleming has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Fleming as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Eugene and Oregon
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: 208. Middle half: 112 to 463.
More Medicare Part B services than 60% of clinicians listed under Optometrist in Oregon (2024, 406 clinicians with data). Median for this group: 177. Middle half: 81 to 438.
Medicare-allowed amount
Close to the middle for clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: $21,917. Middle half: $12,189 to $40,154.
Close to the middle for clinicians listed under Optometrist in Oregon (2024, 406 clinicians with data). Median for this group: $17,401. Middle half: $7,611 to $40,857.
Paid by Medicare
Close to the middle for clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: $14,403. Middle half: $7,421 to $27,221.
Close to the middle for clinicians listed under Optometrist in Oregon (2024, 406 clinicians with data). Median for this group: $11,247. Middle half: $4,851 to $26,205.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: 170. Middle half: 96 to 322.
More Part D prescriptions than 75% of clinicians listed under Optometrist in Oregon (2024, 420 clinicians with data). Median for this group: 111. Middle half: 42 to 231.
Part D drug cost
Close to the middle for clinicians listed under Optometrist in Eugene, OR (2024, 22 clinicians with data). Median for this group: $4,185. Middle half: $1,017 to $20,177.
Close to the middle for clinicians listed under Optometrist in Oregon (2024, 420 clinicians with data). Median for this group: $3,489. Middle half: $726 to $12,175.
45 active clinicians are listed under Optometrist with a practice address in Eugene, OR (946 in Oregon).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Eugene
2.2% of these 45 clinicians have the CMS telehealth indicator.
60% of these 45 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services increased 60% from 153 in 2020 to 245 in 2024.
- 2020: 153
- 2021: 225
- 2022: 248
- 2023: 231
- 2024: 245
-
Medicare-allowed amount
Medicare-allowed amount increased 59% from $13,500 in 2020 to $21,494 in 2024.
- 2020: $13,500
- 2021: $19,602
- 2022: $23,104
- 2023: $19,538
- 2024: $21,494
-
Paid by Medicare
Paid by Medicare increased 60% from $8,878 in 2020 to $14,230 in 2024.
- 2020: $8,878
- 2021: $12,686
- 2022: $13,993
- 2023: $12,415
- 2024: $14,230
-
Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 245 in 2020 and 239 in 2024.
- 2020: 245
- 2021: 218
- 2022: 254
- 2023: 219
- 2024: 239
-
30-day fills
30-day fills stayed about the same: 405 in 2020 and 384 in 2024.
- 2020: 405
- 2021: 341
- 2022: 353
- 2023: 340
- 2024: 384
-
Part D drug cost
Part D drug cost decreased 84% from $18,707 in 2020 to $3,000 in 2024.
- 2020: $18,707
- 2021: $25,037
- 2022: $28,459
- 2023: $23,356
- 2024: $3,000
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $189.01 in 2020 to $33.74 in 2024.
- 2020: $189.01
- 2021: $15.81
- 2022: $133.26
- 2023: $49.75
- 2024: $33.74
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $33.74.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| RxSight Inc |
Food and Beverage
In-kind items and services
|
RXSIGHT CONTACT LENS | General | $19.40 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $14.34 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
77 | 56 | $155.00 | $88.23 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
68 | 61 | $240.00 | $124.39 |
|
92134
Imaging of retina
|
57 | 46 | $145.00 | $39.19 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
17 | 17 | $405.00 | $161.73 |
|
92083
Exam of visual field with extended testing
|
13 | 13 | $215.00 | $61.73 |
|
92133
Imaging of optic nerve
|
13 | 12 | $145.00 | $35.09 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 128 | 5,255 | $1,055.14 | 31 |
| Timolol Maleate | Timolol Maleate | 46 | 2,733 | $382.03 | 15 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 24 | 1,378 | $467.37 | — |
| Dorzolamide Hcl | Dorzolamide Hcl | 14 | 701 | $276.12 | — |
| Neomycin-Polymyxin-Dexameth | Neomycin/Polymyxin B/Dexametha | 14 | 205 | $168.41 | 12 |
| Prednisolone Acetate | Prednisolone Acetate | 13 | 428 | $651.06 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 152W00000X
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
NUCC Taxonomy Code: 152W00000X
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPTOMETRY
I20120111000668
OR
9739356973
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Ophthalmology - Retina Specialist
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1550 OAK ST STE 4, EUGENE, OR 974017701 (Tel: 5417622763)
Registered at 1430 WILLAMETTE ST # 17, EUGENE, OR 974014049 (Tel: 5417622763)
Recorded as DARRIN FLEMING, OD
Optometrist (license number reported to NPPES: OR ATI-4026)
NPI status registered as active in NPPES database
Registered at 992 COUNTRY CLUB RD, SUITE 101, EUGENE, OR 974016023 (Tel: 5416871715)
Registered at 992 COUNTRY CLUB RD, SUITE 101, EUGENE, OR 974016023 (Tel: 5416871715)
Recorded as DARRIN FLEMING, O.D.
Optometrist (license number reported to NPPES: OR 4026AT)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Optometrists in Eugene
- Dr. Joseph Luiso, OD
- Dr. Kara Lei Muraoka, OD
- Dr. Christopher Leder, OD
- Dr. Robin Bautista, OD
- Dr. Kaylee Hass, OD
- Dr. Dominic Lemas, OD
Mailing Address
1430 Willamette St # 17
Eugene, OR 974014049
Phone: 5417622763